1316355638 has 16 divisors (see below), whose sum is σ = 2127634656. Its totient is φ = 607201920.

The previous prime is 1316355631. The next prime is 1316355641. The reversal of 1316355638 is 8365536131.

It is a junction number, because it is equal to n+sod(n) for n = 1316355595 and 1316355604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316355631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35183 + ... + 62213.

It is an arithmetic number, because the mean of its divisors is an integer number (132977166).

Almost surely, 2^1316355638 is an apocalyptic number.

1316355638 is a deficient number, since it is larger than the sum of its proper divisors (811279018).

1316355638 is a wasteful number, since it uses less digits than its factorization.

1316355638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28919.

The product of its digits is 194400, while the sum is 41.

The square root of 1316355638 is about 36281.6157027220. The cubic root of 1316355638 is about 1095.9508537067.

The spelling of 1316355638 in words is "one billion, three hundred sixteen million, three hundred fifty-five thousand, six hundred thirty-eight".